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Finding the Fourth Proportional to 101,290.40, 139,752.30 and 58,267.64

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Solution

The fourth proportional to 101,290.40, 139,752.30 and 58,267.64 is: 80,392.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,290.40 : 139,752.30 = 58,267.64 : x
  2. Step 2: Convert to fraction form
    101,290.40/139,752.30 = 58,267.64/x
  3. Step 3: Cross multiply
    101,290.40x = 139,752.30 × 58,267.64
  4. Step 4: Simplify right side
    101,290.40x = 8,143,036,705.57
  5. Step 5: Solve for x
    x = 8,143,036,705.57/101,290.40
  6. Step 6: Final answer
    x = 80,392.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.